|
Measurement of the forward-backward asymmetry in low-mass bottom-quark pairs produced in proton-antiproton collisionsMeasurement of the forward-backward asymmetry in low-mass bottom-quark pairs produced in proton-antiproton collisionsAA00773624 |
"/CDF Collaboration/"CDF Collaboration ,
"/Hara, K./"Hara, K. ,
"/Kim, S. H./"Kim, S. H. ,
"/Sato, K./"Sato, K. ,
"/Ukegawa, F./"Ukegawa, F. ,
"/Takeuch, Y./"Takeuch, Y.
93
(
11
)
, p.112003 , 2016-06 , American Physical Society
ISSN:2470-0010
NCID:AA00773624
Description
We report a measurement of the forward-backward asymmetry, AFB, in bb¯ pairs produced in proton-antiproton collisions and identified by muons from semileptonic b-hadron decays. The event sample is collected at a center-of-mass energy of s√=1.96 TeV with the CDF II detector and corresponds to 6.9 fb−1 of integrated luminosity. We obtain an integrated asymmetry of AFB(bb¯)=(1.2±0.7)% at the particle level for b-quark pairs with invariant mass, mbb¯, down to 40 GeV/c2 and measure the dependence of AFB(bb¯) on mbb¯. The results are compatible with expectations from the standard model.
Full-Text
https://tsukuba.repo.nii.ac.jp/?action=repository_action_common_download&item_id=38586&item_no=1&attribute_id=17&file_no=1